Results 121 to 130 of about 28,706 (262)
Electrospun conducting polymers: recent trends and the transition towards a sustainable future
Polymer International, EarlyView.This review discusses the electrospinning of conducting polymers, detailing procedures, fibrous morphologies, improved properties, applications in electronics, and challenges, while outlining future directions for nanofibre‐based devices in various fields.
Xenofon Karagiorgis +3 more
wiley +1 more source
Preparation of antibacterial composite films from PHB blend and chitosan
, 2017 碩士本實驗採用具生物分解性的天然高分子聚羥基丁酯(Polyhydroxybutyrate，PHB)，添加聚乙二醇(Poly(ethylene oxide)，PEO)製成薄膜後，以DSC探討兩高分子之間相容性。再將帶有抗菌功能的幾丁聚醣(Chitosan，CS)，溶於內含丙烯酸(Acrylic acid，AA)、聚乙二醇雙丙烯酸酯(Poly(ethylene glycol)diacrylate，PEGDA)及光起始劑(HMPP)水溶液，塗布於PHB/PEO薄膜，經PEO滲進薄膜內，再由UV光硬化 ...
顏敏謙;Yen, Ming-Chien
core +1 more source
Studies on compatibility and biodegradability of PHB/PLA blends
, 2011 碩士高分子材料擁有良好的機械性質與材料的易加工性，大幅降低生產成本，以上的優點，使得高分子材料在日常生活中大量的被使用而增加了生活的便利性。其中，脂肪族熱塑性聚酯類的聚乳酸(Poly(lactic acid), PLA)與聚羥基丁酯(Poly(3-hydroxybutyrate), PHB)由於可以被微生物分泌的酵素所分解而被稱為是對環境友善的生物可分解高分子。為了使聚乳酸有較好的機械性質，部分研究選擇添加塑化劑，但是塑化劑本身不見得可以被微生物所分泌的酵素分解，因此本研究欲以聚羥基丁酯與聚乳酸作摻合 ...
劉義峋; Liu, Yi-Hsun
core
Towards greener yttrium‐catalyzed ring‐opening polymerization via an all‐terpene reaction concept
Polymer International, EarlyView.Development of a terpene‐based catalytic system for ring‐opening polymerization of bio‐based lactones that reveals the steric effects of the nucleophile on initiation and alkoxide exchange, while simultaneously enabling post‐polymerization functionalization.
Lea‐Sophie Hornberger +3 more
wiley +1 more source
Roll‐to‐Roll Processing of Biodegradable Multilayer Barrier Packaging Structures
Packaging Technology and Science, EarlyView.This work demonstrates that novel packaging materials built using biobased and biodegradable materials can be produced in pilot‐scale and converted into functional barrier packaging. The proposed structures are anticipated to make a strong impact in use‐cases where the risk of environmental littering is elevated, such as snacks and take away meals ...
Enni Luoma +5 more
wiley +1 more source
Polímeros, 2010 O PHB (Poli-3-hidroxibutirato) é um termoplástico biodegradável sintetizado por fermentação submersa a partir de matérias-primas renováveis. A utilização de fibras naturais tem sido pesquisada visando melhorar as propriedades e reduzir o custo do PHB.
Miriam L. C. Machado +4 more
doaj
Separating PHB from Microorganism Broth
, 1999 目前“白色污染”正日益严重地威胁着自然环境，它造成了如土地质量严重退化而使农业减产等许多问题，世界各国也为寻找对策进行了大量的研究，其中使用可降解塑料是一个最有前途、最有效的办法，PHB（聚－β－羟基丁酸）正是其中研究最早、应用前景最广泛的生物可降解材料。但是，目前由于其成本较高，与廉价的石油工业高分子材料在价格上无法竞争，影响了它的广泛使用。为了降低成本，提高生产效率，本文针对发酵法生产PHB过程中存在的，发酵液难以分离沉淀，非有机溶剂提取PHB时分子量严重降低等问题，
秦杰
core
, 2008 O objetivo deste trabalho foi o estudo das propriedades mecânicas e térmicas do PHB e de compósitos de PHB/pó de madeira processados, reprocessados e irradiados.
Miriam Lúcia Chiquetto Machado +1 more
core +1 more source
Small, EarlyView.Impact of co‐reactants and their doses utilized during the atomic layer deposition of SnOx on perovskite/C60 structures on the performance of p‐i‐n perovskite solar cells. ABSTRACT Although tin oxide (SnOx) layers grown using atomic layer deposition (ALD) are routinely employed in p‐i‐n perovskite solar cells (PSCs), the correlation between ALD process
Bhavya Rakheja +12 more
wiley +1 more source
Immunohistochemical analysis of PHB in gastric samples.
, 2014 A) PHB staining in normal gastric mucosa (400x); B) PHB immunoreactivity in normal gastric mucosa and inflammatory cells (400x); C) strong PHB staining in intestinal metaplastic cells (400x); D) strong PHB staining in an intestinal-type tumor; E ...
Paulo Pimentel Assumpção (147541) +10 more
core +1 more source